Before I go out looking for replacement speakers, thought I'd check with everyone here to see if this is fixable:

My speakers are Cambridge Soundworks DTT2500, very old but have always been working fine. It comes with a decoder amplifier that all 5 speakers plug into.

In the past year, I've noticed that the front left speaker had been quieter than the other. Sometimes, it crackled or had no sound too. I did a few tests:

- I switched the left and right speakers. Now the problem went to the speaker (right) plugged into the left connector. Left speaker was now fine.
- I plugged in a rear speaker into the left connector, same problem.
- I plugged the rear speaker into each of the five connectors, and the only one that showed problems was that left connector.

So I'm guessing that the one connector is defective. I opened the amplifier and couldn't see anything wrong with it or any of the caps. I searched around the net and couldn't find a fix, so does anyone know how to fix this? Or could there be some other issue in the amplifier?

It could be the connector, but if you wiggle it it might give you the volume that you are looking for. I am guessing that your amplifier's channel for that speaker is just getting old and cannot produce anymore, which Cialis or Viagra cannot fix.